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Earthquake Hazards Program


Thursday, January 15, 2009 at 07:27:20 UTC

Theoretical P-Wave Travel Times

Theoretical P-wave Travel Times

This map shows the predicted (theoretical) travel times, in minutes, of the compressional (P) wave from the earthquake location to points around the globe. The travel times are computed using the spherically-symmetric IASP91 reference earth velocity model. The heavy black lines shown are the approximate distances to the P-wave shadow zone (103 to 140 degrees).

Theoretical P-Wave Travel Times
City Distance
Travel Time
Arrival Time
Brisbane, Australia 16.64 3:49.7 7:31:13.7Pn
Wellington, New Zealand 19.13 4:18.7 7:31:42.7P
Agana, Guam 43.70 7:59.7 7:35:23.7P
Honolulu, Hawaii 53.34 9:13.8 7:36:37.8P
Tokyo, Japan 64.7110:32.7 7:37:56.7P
Beijing, China 79.9212:03.4 7:39:27.4P
Palmer Station, Antarctica 81.5612:12.1 7:39:36.1P
San Francisco, California 86.9012:39.2 7:40:03.2P
Los Angeles, California 87.9712:44.3 7:40:08.3P
Anchorage, Alaska 89.2512:50.3 7:40:14.3P
Seattle, Washington 92.2013:04.0 7:40:28.0P
Phoenix, Arizona 92.2813:04.4 7:40:28.4P
Kathmandu, Nepal 96.1213:21.9 7:40:45.9P
Albuquerque, New Mexico 97.0613:26.1 7:40:50.1P
Mexico City, Mexico 97.5013:28.1 7:40:52.1P
Golden, Colorado 99.8313:38.5 7:41:02.5Pdiff
Brownsville, Texas 101.1813:44.4 7:41:08.4Pdiff
Wichita, Kansas 105.0214:01.5 7:41:25.5Pdiff
Lima, Peru 105.4614:03.4 7:41:27.4Pdiff
St. Louis, Missouri 110.6414:26.4 7:41:50.4Pdiff
Duluth, Minnesota 110.9014:27.6 7:41:51.6Pdiff
Knoxville, Tennessee 114.0614:41.6 7:42:05.6Pdiff
Miami, Florida 116.1014:50.7 7:42:14.7Pdiff
Washington, D.C. 120.8715:11.9 7:42:35.9Pdiff
Ottawa, Canada 122.1515:17.5 7:42:41.5Pdiff
Philadephia, Pennsylvania 122.4015:18.6 7:42:42.6Pdiff
New York, New York 123.3215:22.7 7:42:46.7Pdiff
Boston, Massachusetts 125.5315:32.5 7:42:56.5Pdiff
San Juan, Puerto Rico 127.0515:39.3 7:43:03.3Pdiff
Bangor, Maine 127.0915:39.5 7:43:03.5Pdiff
Nairobi, Kenya 129.0715:48.2 7:43:12.2Pdiff
Moscow, Russia 131.9516:01.0 7:43:25.0Pdiff
Bergen, Norway 140.6816:39.8 7:44:03.8Pdiff
London, England 150.1019:40.4 7:47:04.4PKPdf
Rome, Italy 153.2519:45.4 7:47:09.4PKPdf

Travel Time Information and Calculator

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver

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